The biggest boost to the energy sector was Canadian Natural Resources, which rose $1.12, or 2.4%, to $48.06. Enbridge gained 39 cents to $42.19, after the pipeline operator said it would bring its independent units and liquids and gas pipeline assets under a single listed entity.

The NASDAQ gave back 15.82 points to 7,382.47, with Amazon, Netflix, Apple and Alphabet all falling.

Wall Street also looked to Washington as the U.S. and China kicked off the second round of trade talks. U.S. and Chinese officials have indicated that the gap between the two countries is significant, however.

Tensions between the U.S. and China have increased in recent months as both countries have hit each other with tariffs targeting some of their exports. The U.S. also banned companies from exporting goods to Chinese tech companies ZTE. Those tensions have sparked worries that the two largest world economies could engage each other in a trade war.

Prices for the benchmark for the 10-year U.S. Treasury were lower, raising yields to 3.12% from Wednesday’s 3.1%. Treasury prices and yields tend to move in opposite directions.